DNP Select Income Fund Inc. Announces Distributions

DNP Select Income Fund Inc. Announces Distributions September 17, 2026 DNP Select Income Fund Inc. (NYSE: DNP) (“the Fund”), a closed-end fund advised by Duff & Phelps Investment Management Co. (the “Investment Adviser”), today announced the following distributions on the Fund’s common stock: Per Share Amount Ex-Date Record Date Payable Date $0.065 October 30, 2026 October 30, 2026 November 10, 2026 $0.065 November 30, 2026 November 30, 2026 December 10, 2026 $0.065 December 31, 2026 December 31, 2026 January 11, 2027 The Fund adopted a Managed Distribution Plan (the “Plan”) in 2007. Under the Plan, the Fund will distribute all available investment income to its shareholders, consistent with the Fund’s primary objective. If and when sufficient investment income is not available on a monthly basis, the Fund will distribute realized capital gains and/or return of capital to its shareholders in order to maintain the monthly $0.065 per share distribution level. The Fund previously provided this estimate of the sources of the distributions: Distribution Estimates August 2026 (MTD) Fiscal Year-to-Date (YTD)(1) (Sources) Per Share Amount Percentage of Current Distribution Per Share Amount Percentage of Current Distribution Net Investment Income $ 0.030 46.2% $ 0.214 32.7% Net Realized Short-Term Capital Gains 0.000 0.0% 0.005 0.8% Net Realized Long-Term Capital Gains 0.035 53.8% 0.319 49.2% Return of Capital (or other Capital Source) 0.000 0.0% 0.112 17.3% Total Distribution $ 0.065 100.0% $ 0.650 100.0% (1) Fiscal year started November 1, 2025. As of August 31, 2026 Average annual total return on NAV for the 5-year period 8.56% Annualized current distribution rate as a percentage of NAV 8.18% Cumulative total return on NAV for the fiscal year 9.52% Cumulative fiscal year distributions as a percentage of NAV 6.81% The Fund will issue a separate 19(a) notice at the time of each distribution using the most current financial information available. You should not draw any conclusions about the Fund’s investment performance from the amount of these distributions or from the terms of the Plan. The Fund estimates that it distributed more than its income and net realized capital gains; therefore, a portion of your distribution may be a return of capital. A return of capital may occur for example, when some or all of the money that you invested in the Fund is paid back to you. A return of capital distribution does not necessarily reflect the Fund’s investment performance and should not be confused with ‘yield’ or ‘income’. The amounts and sources of distributions reported in this notice are only estimates and are not being provided for tax reporting purposes. The actual amounts and sources of the amounts for tax reporting purposes will depend upon the Fund’s investment experience during the remainder of the fiscal year and may be subject to changes based on tax regulations. The Fund or your broker will send you a Form 1099-DIV for the calendar year that will tell you how to report these distributions for federal income tax purposes. About the Fund DNP Select Income Fund Inc. is a closed-end diversified investment management company whose primary investment objectives are current income and long-term growth of income. The fund seeks to achieve these objectives by investing primarily in a diversified portfolio of equity and fixed income securities of companies in the public utilities industry. For more information, contact shareholder services at (877) 381-2537, by email at duff@virtus.com, or visit the DNP website, dpimc.com/dnp. About the Investment Adviser Duff & Phelps Investment Management Co. is a boutique investment manager that specializes in listed real asset strategies for institutional and individual clients. An investment manager of Virtus Investment Partners, Inc. (NYSE: VRTS), the firm began in 1932 as a fundamental research firm and has been managing assets since 1979. The firm seeks to provide specialty investment strategies that enhance client outcomes through active portfolio management and customized solutions, utilizing a process with values that include quality, reliability, and specialization. Investment strategies include U.S. and global real estate securities, global listed infrastructure, energy infrastructure, water, and clean energy. For more information visit dpimc.com. For Further Information: DNP Fund Services (877) 381-2537 duff@virtus.com Source: DNP Select Income Fund Inc.